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Finding the Fourth Proportional to 663,473.60, 995,440.80 and 289,764.80

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Solution

The fourth proportional to 663,473.60, 995,440.80 and 289,764.80 is: 434,747.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,473.60 : 995,440.80 = 289,764.80 : x
  2. Step 2: Convert to fraction form
    663,473.60/995,440.80 = 289,764.80/x
  3. Step 3: Cross multiply
    663,473.60x = 995,440.80 × 289,764.80
  4. Step 4: Simplify right side
    663,473.60x = 288,443,704,323.84
  5. Step 5: Solve for x
    x = 288,443,704,323.84/663,473.60
  6. Step 6: Final answer
    x = 434,747.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.